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參數(shù)資料
| 型號(hào)： | MAX538 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | +5V, Low-Power, Voltage-Output, Serial 12-Bit DACs(單通道,電壓輸出,12位串行D/A轉(zhuǎn)換器) |
| 中文描述： | +5V、低功耗、電壓輸出、串行12位DAC |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 174K |
| 代理商： | MAX538 |
M
5V, Low-Power, Voltage-Output
S erial 12-Bit DACs
8
_______________________________________________________________________________________
10
FUNCTION
1
BIPOFF
Bipolar offset/gain
resistor
2
DIN
Serial data input
3
CLR
Clear. Asynchronously sets
DAC register to 000hex.
PIN
—
1
4
SCLK
Serial clock input
5
CS
Chip select, active low
6
DOUT
Serial data output for
daisy-chaining
7
DGND
Digital ground
—
2
3
8
AGND
Analog ground
9
REFIN
Reference input
4
—
5
6
—
REFOUT
Reference output,
2.048V
11
—
V
SS
Negative power supply
12
7
VOUT
DAC output
13
8
V
DD
Positive power supply
14
—
RFB
Feedback resistor
MAX531
MAX538/
MAX539
NAME
____________________Pin Desc ription
_______________Detailed Desc ription
General DAC Disc ussion
The MAX531/MAX538/MAX539 use an “inverted” R-2R
ladder network with a single-supply CMOS op amp to con-
vert 12-bit digital data to analog voltage levels (see
Functional Diagram) The term “inverted” describes the
ladder network because the REFIN pin in current-output
DACs is the summing junction, or virtual ground, of an op
amp. However, such use would result in the output volt-
age being the inverse of the reference voltage. The
MAX531/MAX538/MAX539’s topology makes the output
the same polarity as the reference input.
An internal reset circuit forces the DAC register to reset to
000hex on power-up. Additionally, a clear CLR pin, when
held low, sets the DAC register to 000hex. CLR operates
asynchronously and independently from the chip select
CS pin.
Buffer Amplifier
The output buffer is a unity-gain stable, rail-to-rail output,
BiCMOS op amp. Input offset voltage and CMRR are
trimmed to achieve better than 12-bit performance.
Settling time is 25μs to 0.01% of final value. The output is
short-circuit protected and can drive a 2k
load with more
than 100pF load capacitance.
t
CSH0
t
CSS
t
CH
t
CL
t
CSH1
t
CSW
t
DS
t
DH
t
DO
CS
SCLK
DIN
DOUT
t
CS1
Figure 1. Timing Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5380LEUK | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX5380LEUK+ | 制造商:Maxim Integrated Products 功能描述:DAC SGL CURRENT STEERING 8BIT 5PIN SOT-23 - Rail/Tube |
| MAX5380LEUK+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5380LEUK-T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5380MEUK | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product 制造商:Rochester Electronics LLC 功能描述: |
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